MCP2036 반도체 회로 부품 판매점
Inductive Sensor Analog Front End Device
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 Microchip Technology |
www.DataSheet4U.com
MCP2036
Inductive Sensor Analog Front End Device
Features
• Complete Inductance Measurement System:
- Low-Impedance Current Driver
- Sensor/Reference Coil Multiplexer
- High-Frequency Detector
• Operating Voltage: 2.7 to 5.5V
• Low-Power Standby Mode
• Gain and Frequency set by external passive
components
Typical Applications
• Harsh environment inductive keyboards
• Inductive rotational sensor interface
• Inductive displacement sensor interface
• Inductive force sensor interface
Package Types
MCP2036 14-pin PDIP, SOIC
VREF 1
LREF 2
LBTN 3
VDD 4
DRVOUT 5
DRVIN 6
CLK 7
14 VDET+
13 VDET-
12 VDETOUT
11 VSS
10 Reserved
9 CS
8 REFSEL
Description
The MCP2036 Inductive Sensor Analog Front End
(AFE) combines all the necessary analog functions for
a complete inductance measurement system.
The device includes :
• High-frequency, current-mode coil driver for
exciting the sensor coil.
• Synchronous detector for converting AC sense
voltages into DC levels.
• Output amplifier/filter to improve resolution and
limit noise.
• Virtual ground reference generator for single
supply operation.
The device is available in 14-pin PDIP, SOIC and
16-pin QFN packages:
MCP2036 16-pin QFN
LREF 1
LBTN 2
VDD 3
DRVOUT 4
12 VDET-
11 VDETOUT
10 VSS
9 Reserved
© 2009 Microchip Technology Inc.
DS22186A-page 1
MCP2036
www.DataSheet4U.com
1.0 FUNCTIONAL DESCRIPTION
The MCP2036 measures a sensor coil’s impedance by
exciting the coil with a pulsed DC current and
measuring the amplitude of the resulting AC voltage
waveform. The drive current is generated by the
on-chip current amplifier/driver which takes the
LREF
LBTN
CLK
high-frequency triangular waveform present on the
DRVIN input, and amplifies it into the pulsed DC current
for exciting the series combination of the sensor coils.
The AC voltages generated across the coils, are then
capacitively coupled into the LBTN and LREF inputs.
An input resistance of 2K between the inputs and the
virtual ground offsets the AC input voltages up to the
signal ground generated by the reference voltage
generator, as shown in Figure 1-1.
REFSEL
VSS
VDD
Input MUX
10
Mixer
Op. Amp. Block
10K
+
10K
-
Key Inductor Driver
Voltage
Reference
FIGURE 1-1:
CS DRVIN
MCP2036 Block Diagram
DRVOUT
VDET+
VDETOUT
VDET-
VREF
DS22186A-page 2
© 2009 Microchip Technology Inc.
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제조업체: Microchip Technology
( microchip )
MCP2036 sensor
데이터시트 다운로드 :
[ MCP2036.PDF ]
[ MCP2036 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
MCP2030
Three-Channel Analog Front-End Device - Microchip Technology
MCP2035
Analog Front-End Device - Microchip
MCP2036
Inductive Sensor Analog Front End Device - Microchip Technology